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Elucidating Mechanisms For The Biological Activities Of CD46.
Funder
National Health and Medical Research Council
Funding Amount
$228,000.00
Summary
The CD46 protein enables entry into cells of a number of different pathogens, including the measles virus, Neisseria meningitidis (the major cause of meningococcal disease), Neisseria gonorrhoea, Human Herpes Virus 6, and group A streptococcus. In addition, by binding to a key blood component that is often attached to foreign pathogens, CD46 can facilitate binding and entry of other pathogens. As well as facilitating entry of the pathogen, it has recently become apparent that CD46 binding trigge ....The CD46 protein enables entry into cells of a number of different pathogens, including the measles virus, Neisseria meningitidis (the major cause of meningococcal disease), Neisseria gonorrhoea, Human Herpes Virus 6, and group A streptococcus. In addition, by binding to a key blood component that is often attached to foreign pathogens, CD46 can facilitate binding and entry of other pathogens. As well as facilitating entry of the pathogen, it has recently become apparent that CD46 binding triggers a wide range of responses from the human host. Some of these responses are likely to further facilitate survival and proliferation of the pathogen, but others are more likely to facilitate host defence. For examples, signals triggered by binding to CD46 can both abrogate some aspects of the immune response (and it is though that this immunosuppression contributes to the secondary infections that cause the death of nearly one million children each year) and facilitate other aspects of the immune response. By understanding the mechanisms by which CD46 triggers these complex responses, we firstly be able to dissect how important each of these processes are to the overall pathogenecity of the virus or bacteria. Furthmore, this understanding will allow us to design better vaccines and drugs to combat these diseases.Read moreRead less
The body tightly controls when and where proteins are made. Likewise once a protein has performed its function, it must be removed. Targeted proteolysis serves to reset the cell so that it can respond anew to stimuli that trigger growth and cell development. The Siah proteins are a family of proteins that control the turnover of other proteins. Siah proteins are remarkably highly conserved in evolution, and counterparts of the human proteins can be found in fruitflies, worms and plants. There ar ....The body tightly controls when and where proteins are made. Likewise once a protein has performed its function, it must be removed. Targeted proteolysis serves to reset the cell so that it can respond anew to stimuli that trigger growth and cell development. The Siah proteins are a family of proteins that control the turnover of other proteins. Siah proteins are remarkably highly conserved in evolution, and counterparts of the human proteins can be found in fruitflies, worms and plants. There are three different types of Siah protein in mice and this study investigates the function of the each protein by creating mice that lack one or more of these proteins. Our work to date has revealed that the Siah genes are involved in growth and fertility of mammals. The genes are also important for cell division, which implicates them in proliferative diseases such as cancer.Read moreRead less
The Role Of Dysferlin In Muscular Dystrophy And Skeletal Muscle Membrane Repair.
Funder
National Health and Medical Research Council
Funding Amount
$316,667.00
Summary
Patients who lack the protein dysferlin have muscular dystrophy. These patients are unable to repair their muscle membranes, which get damaged during normal activities. A defect in membrane repair is a new pathway implicated in the muscular dystrophies, and it is likely that other patients will also have defective muscle membrane repair. We will find out how dysferlin mediates its role in membrane repair, and identify other dysferlin-interacting proteins, as these may also underlie disease.